#include <stdio.h>
#define TRUE 1
#define FALSE 0
#define SQ(x) (x)*(x)

/*宏定义命令练习*/

void main()
{
    int num;
    int again=1;
    printf("Program will stop if input value less than 50/\n");
    while(again)
    {
        printf("lease input number==>");
        scanf("%d",&num);
        printf("The square for this number is %d\n",SQ(num));
        if(num>=50)
        again=TRUE;
        else
        again=FALSE;
    }
    
}
